How to Test if Baby Outgrow Dairy Allergy: And When do Babies Grow out of Milk Protein Intolerance

What About Lactose Intolerance

Lactose intolerance can be very different from a dairy allergy. While lactose intolerance can be caused by a digestive problem, a milk allergy is an immune-system response. Lactose intolerance refers to an inability to digest lactose, a naturally occurring sugar found in milk.

A milk allergy can develop early in life but is usually overcome. Lactose intolerance occurs later in life, during childhood, or even adolescence. It typically develops as the levels of lactase, which are required to properly digest lactose. Rarely, babies are born lactase deficient and are lactose-intolerant from birth.

Other times, lactose intolerance could be a sign of another condition. Your child may have celiac disease, an infection, or a condition that makes it difficult to digest lactose. Your child will become more tolerant to lactose as their digestive tract heals.


Signs of Lactose Intolerance in Kids

These six signs are indicative of lactose intolerance.

Abdominal pain and cramps

Although your little one might not be able to tell you that they have stomach cramps or a stomach ache, they will be open to sharing their feelings with you. To detect potential lactose intolerance, pay attention to your child’s behavior after eating dairy products.

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Your toddler may not be able to tell you if they are feeling this symptom. However, if you look closely at their stomach, you can tell if the milk has made them bloated.



Another side effect of lactose intolerance is nausea. Your child may even vomit if they have sensitive stomachs. When determining whether your child has a dairy allergy, be aware of signs such as crying or clutching at the stomach.


Diarrhea, strong-smelling Stool

Being a parent to toddlers means you are more familiar with diaper changes. You will likely notice any oddities in your child’s stool consistency. If your child is unable to digest lactose it can ferment in their digestive tract and cause diarrhea. It is easy to identify lactose intolerance in children who have recently had dairy.



Your child may be lactose-intolerant if they are particularly gassy after eating dairy products or cry when passing gas. Gas trapped in the stomach can cause severe discomfort, stomach cramps, and upset.


Rapid Onset of Symptoms

These symptoms can be indicative of any number of diseases, but the rapid onset of symptoms is a key difference between other illnesses or food intolerances. If your child is lactose-intolerant, any of these symptoms will be present within 30 minutes to two hours.


When do Babies Grow out of Milk Protein Intolerance

When do Babies Grow out of Milk Protein Intolerance. You may be able, after a few months, to gradually introduce dairy back to your baby’s diet if you have stopped breastfeeding because they are sensitive to milk proteins from cows. Many babies who are dairy-sensitive outgrow their sensitivity between 6 and 18 months. Most outgrow it within 3 years.

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How to Test if Baby Outgrow Dairy Allergy

How to Test if Baby Outgrow Dairy Allergy. It can be difficult to determine if your child is allergic to dairy or has another illness such as digestive problems or a GI infection.

It is a good idea to keep a food log and note your child’s symptoms before your child goes to see an allergist or pediatrician. Multiple methods are available to diagnose milk allergy.

Oral Food Challenge

A food challenge is a common method of diagnosing food allergies. You would first remove milk from your child’s diet for a few days. Then, a small amount would be added to your doctor’s office in order to monitor your child’s reaction.

The best way to detect FPIES is with an oral food challenge. It is also used for the diagnosis of IgE-mediated milk allergies and EGIDs.


Skin Prick Test

A skin prick test is also known as a scratch test. It involves applying a small amount of milk to the skin. A milk allergy is a skin reaction that lasts less than 15 minutes. A milk allergy is caused by milk consumption, not touching it. However, a negative reaction (no response) does not necessarily mean that you are allergic to milk.

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